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D(ISPFZ)/TVG(ETFZ)/TVSETFZ - Finder zero
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You must supply the X and Y scales in arcsec/TV pixel. These numbers are best
determined by trailing a star from one edge of the TV frame to the other on
both X and Y and noting the number of arcsec the telescope had to be shifted.
Divide these numbers by 512 (the number of pixels in a TV frame) to obtain the
scale factors in arcsec/pixel.
If significant differences are found (i.e. more than 5
) between the
values thus determined and the values the TV currently holds, the Software
Group Manager should be informed as soon as possible so that the defaults can
be updated. The current defaults can be found by using the DISTANCE option
provided by the TV menu to measure the number of arcsec in X and Y from one
side of the TV frame to the other.
The values you send to the TV will not be used until you have
explicitly selected the finder TV. This means that, after using the
TVSETSCALE command, you must select one of the other cameras (e.g. Cass.),
and then go back to the finder TV.
The scale values are temporary in the sense that when you come
out of ADAM and restart, you will have to re-issue the TVSETSCALE command
as the values you have loaded may have been lost.
Parameters
Reply to prompts
Example
Adam:> TVSETSCALE